Pics: 12 Weird World Records

The heaviest competing sportswoman living is Sharran Alexander - her preferred sport is sumo wrestling and she weighs in at 203.21 kg. Photo: Guinness World Records

The tallest living dog is Zeus a great Dane who measures 1.118m. He recently took over from previous holder of the title, Giant George. Photo: Guinness World Records

The World's Oldest gymnast, born in Germany on 25 November 1925, is Johanna Quaas. At 86-years-old she still regularly competes. Photo: Guinness World Records

A nine-year-old Belgian Gelding horse known as Big Jake is the World's tallest horse at 2.75m high, without shoes we might add. Big Jake lives on a farm in Wisconsin,US. Photo: Guinness World Records

Egytian Mostafa Ismail has claimed the title for the world's largest biceps. When flexed his left arm measures 64.77cm and his right arm measures 63.5cm. The record was set in Franklin, Massachusetts, USA where Mostafa now resides. Photo: Guinness World Records

Juggling clearly is a way of life for Alex Barron who set the world record by juggling as many as 11 balls at one time, managing a total of 23 consecutive catches.Photo: Guinness World Records